*{box-sizing:border-box}
:root{color-scheme:dark;--bg:#060a14;--panel:#0b121d;--line:#1a2a3a;--input:#060a14;--text:#e8edf2;--muted:#9ba8b6;--accent:#34c78e;--danger:#ff8585}
body{margin:0;min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 50% 15%,#102238 0,transparent 38%),var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",sans-serif}
.panel{width:min(100%,400px);padding:32px;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:0 24px 70px #0008}
h1{margin:0 0 8px;color:var(--accent);font-size:1.45rem;line-height:1.2}.subtitle{margin:0 0 24px;color:var(--muted);font-size:.9rem;line-height:1.5}label{display:block;margin-bottom:8px;font-size:.85rem;font-weight:600}input{width:100%;min-height:48px;padding:13px 15px;background:var(--input);border:1px solid #26394c;border-radius:9px;color:#fff;font:inherit}input:focus{outline:2px solid var(--accent);outline-offset:2px}button{width:100%;min-height:48px;margin-top:16px;padding:13px 14px;border:0;border-radius:9px;background:var(--accent);color:#06100c;font:inherit;font-weight:750;cursor:pointer}button:hover{filter:brightness(1.06)}button:focus-visible{outline:2px solid #fff;outline-offset:3px}.error{display:none;margin:14px 0 0;padding:10px 12px;border:1px solid #6c3038;border-radius:8px;background:#2a1218;color:var(--danger);font-size:.85rem;line-height:1.4}.error.visible{display:block}.security{margin:20px 0 0;color:#697786;font-size:.75rem;text-align:center}
@media(max-width:480px){body{align-items:center;padding:16px}.panel{padding:25px 20px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}